Stoker



une 1940. F. H. FRIDENsTlNE 2,2@5,0

SToxEB origina1 Fi1ed sept. 10, 1935 2 SheetsSheet 1 Pafented June 18,1949 UNITED STATES PATENT oFFCE SToKEE f1pp11ootfon Sepfonber 19, 1935,Selfa1 1Tod 39,992 eneWo Novembor 5, 1939 1y invention felates tostokefs and hos fo1' itS objeot to pfovide a neW -alfld en1cient stokeffof feeding coal into fufnaceS, W11ioh Stoker is sin1- ple inconStfuction, econoInioally fnanufactured,

and Which WiH be highly ecient With the gfeatest benefit being lowoperating and upkeep coSts.

11 sti11 fufthef object is to pfovide a, Stokef Whioh vvi11 be providedvvith a positive ohaiI1 dfive Teduction gear with a belt dfive from theInotor to the feduotion housing and With the fan of the devioe opefatingon one side of the box on the saIne Shaft whioh dfiveS the reduotiongeafs and ohain reduoefS in the box.

TheSe objects accoInpliSh vVith the devioe i11uStfated in theaoooInpanying dfaWingS in vh1ch Siff111af nunleralS and letfers offefefence indicate like paftS thfoughout the severa1 views and aSdeSofibed in the Speoication foffning a art of thiS a plication andointed out in the appended olaifn.

1n the dfaWings= 1 'igufe 1 is al side elevation of the stokef complete,ready to insta11 in a fufnaoe.

gure 2 iS plan vieW of the stokef with the furnace She11 and re potshown diagrammati oa1ly.

Figufe 3 iS a feaf end VieW of the Stokef.

1 1gufe 1 fS a side e1evation of the 11fe pot of the stokef.

1 igufe 5 iS a side view of the tuyefe casting.

1 igllfe 6 is a veftica1 Seotiof1 of the paft shovvn in Figufe 5.

igufe 7 is a veffica1 dian1etfioal section of the fe pot, aif ohambef,and feed pipe.

,igufe 8 is a plan view of the fee(1 pipe and Ineans of feeding ooa1into the feed sofew ffoIn the hoppef.

'igfe 9 iS a plan view of the baSe oasting of the a chambef.

Figure 10 1s a side elevaltion of the paft shown in gure 9.

1 igufe 11 is a plan vieW of the covef' for the end of the ai1' ohambef.

f igufe 12 iS a side elevation of the paft shown in gufe 11.

111 the drawingS of my Stokef, the hoppef is shown as A, the blowef fanas B and the fire pot as c.

The fe pot fof the stoker oof1sistS of a fec tongulaf box-1ike base 5forIning the a.i1' chan1ber 5 therein, and with one side of the box-1ikebase fofIIling an extended end. 1 on the saTne plane bllt at a slightang1e to the pafa11e1 s1(1es thefeof to forIn a Ineans fo1' conneotingthe feed pipe, the

air pipe, and the clean o11t therein. 1: 11e top Suf foce of thiSextended end 1 is forIned on a S1ope incfeasing in height ffoIn theoutside of the end 1 to where it mergeS into the sides of the base 5.fhe lowermost poftion of thiS S1ope iS olose(1 by 94 vertioa1 Wa11 andin said vVa11 thefe afe sen11 oifoulaf openingS 19, 11, and 19, intovVhich the pipes for feeding ooa1, air, and foI' o1eanout are plaoed.The clean out pipe 12 Which iS uSed for oleaning o11t the air ohanTbefwhen 3accun1t11ated fly ash and dost nlakes Suoh oleaning neoessary, isintrodooed in the seIni-oirc11lar opening 13 nd iS pfovided vVith an endoap of c1osufe 12o fof holding the pipe olosed l1flti1 s11oh oleaning isneeded. 11 cover 15 is pfovided. fof the end 1 to cover the top thefeof.To sea1 the eI1C1 on the undefSide of the end piece of the covef thefeafe like SeIni-oiroulaf openings 19, 11 and 19 to 11t afound the toppoftionS of the aif feed pipe, the fuel feed pipe, and ^bhe clean o11tpipe. vvith this o constfuotion, the aif feed pipe 9, the fue1 pipe 9,and the oleaJn oI1t pipe 12, afe a11 on the Sanle horiZonta1 plane 1evelvvith eaoh othef but, v11th the olean out pipe extending out alt anang1e to the f11e1 and aif pipes, vvh1oh afe pafane1 to each othefi 'Theaif pipe fof the device consists of ar honow tubular pipe 9 leadingffon1 the b1owef fan B. 11 oontro1 valve 19 iS oaffied in this pipe 9 tooontfo1 the 11ow of ail' thefethrough. The othef en(1 of the pipe 9 isopen to the intefiof chan1bef 5 of the baSe oasting 5. n thiS baSe thefuel 11fe pot 29 is oaffied suppofted of1 the botton1 by a bosS 21 Withal Set Sofew secufed thfough the bottom of the barse 5 into the boss tohold the fe pot alwayS aligned and 111 poS1tion 111 the alif ohambef.The fe pot extendS up in an in vefted ffuSto-conical pyfafnidioa1 pot 22to above the level of the baSe 5 and the top end of the pot 22 isf1anged outwafdly of 29. onto this flange 1 then set 1T1y t11yofeoaSting 25 Whioh oon sists of a f1at top poftion fofInec1 preferab1ysqua1e to t onto the top of the pot 22 and on the nndeTside of thiS f1attop poftion 25 1 pfov1de spacef bosses of' 1ugs 21 to pfovide 9 tuyofeopen ing entifely ofound the fouf SideS of the centfa1 square 29 andaHow the aif ffoIn the air chan1 bef' to paSS thfough thiS opening to ignite the fue1 foroed up throngh the pot 22. The sides of the tuyofecasting afe Sloped. out to Inake thetuyofe casting ffoIn Side vievv if1the fofff1 of al ffustopyfa1idica1 oaSting ond these SideS ef1 gage thotop Sides of the aif' chon1bef baJse 5 and oloSe the top thereof.

The fue1 feed pipe 9 is set and foffned integfal1 With the side of thepot 22 and extends out thfough the opening ln in the baSe and the covefto the soufoe of fI1el which Wi11 be latef desofibed and tf1is pipe iSpfovided vvith an antiback smoki11g featufe by outting a section 3 ffon1the pipe on thfee SideS thefeof and bending this Sec tion up ffon1 thepipe to leave an opening 3 thefethfough vvith the Seotion 3 so bentthart the ir ffon1 the air chaInbef Wi11 paSS into the ooal pipe 8.

The ooal feed pipe 8 has ad flange on the end thefeof by Whioh it iSSeoufed to the geaf houS- ing and case The geaf case is fectangular infofIn and caffies the vafiouS gearS and chainS for Teduoing the Speed ofthe Inotor 1/f and tfanS Initting the power to the feed sorew of worn1F.

The n1otor M is mounted onto the to end of the gea1 houSing and iSconneoted vvith a belt engaging ove1 a sheave Whee1 on the Inotor Shaftand over a Sheave wheel n1ounted on a Shft ex tending fron1 a reductiongeaI' housing The wofm iS dfiven ffoIn the opposite side of the geafhousing.

The hopper A of the device is Set on a base Sn Said base being Securedto the feed pipe 8 by outting away a poftion Bo fron1. the feed pipe andthen Welding the baSe 6G into that space witf1 the top Side of the baSe6u below the leve1 of the top side of the feeding WoTm onto this base Bfhen n1ount my fuel agftating and feeding device whioh conSists of around plate 63 hed in position by a log extending up fron1 the base 60i1to a Sooket 65 i1 the oenteT of the botton1 side of the plate. .AToundthe outef periIneter of this plate p1ovide teeth of fingefS 6G So affanged that they Wi11 contact evefy other oonVolution of the fuel feedworn1 and the fotative power of the feed WoTIn is tra11SInitted to theplate 63 by theSe teeth S1owly rotating the plate. onto the bottom Sideof t11iS plate 63 I pfovide an annulaT oange 68 to hold the plate spacedabove the level of the top of the plate 63 and though this flangepfovide angled outS '69 to a11ow any tTapped ne ooal to wo1'k itS Wayout of the Spaoe under the plate. The top Side of the plate 63 isprovided with upStnding ngefS E to engage in the ooal i1 the hoppef andoauSe the flle1 to dfop into the feedlng Worn1 1 The base Gn has aseotion 'fl cut thereffofnl to accoIn Inodate the feed pipe aS Shown inEfgufe 8 of the dfaWings. The hopper A is then secufed Within the ffangeT2 on the top Side of the baSe 6 and the hopper iS forn1ed in the shapeof a cone vvith one elen1ent thereof veftical to anov a ffee downwafdInoven1ent of the ooal pfessing down onto the feed wofm and the p1te 63at an tiInes and thus there iS a oontinuouS feed of fuel into the feedvvofn1 vvithout any afching of ologging of the ooaL no natter how wet orWhat the oondition of the coa1 IfLay be. The top of the hopper is olosedby a circulaT anged casting 75 Seoufed thefeto and with an open1gtherethrough to a11ovV fof feedi1g of fuel into the hop pef. f cover Gis pivotally Seoured to the caSt ing T ovef the opening and a ookinghandle 76 fS povidUd fof the cove1' to look it i11 o10Sed position aftefthe hoppef haS been filled,

Iaving thus desofibed fny invention desire to Secufe by Lettefs Patentand olain1= I1 a device of the claSS deScribed, the oombination of abox-1ike baSe forn1ing an aiT chan1bef ond having one side extended withSeTnicircu1ar openingS in the closed end thereof; a oover fof Saidextended Side to olose the top thereof Wh like sefni-cifoular openingSthefefn in alignn1ent With the openingS in the baSe an air feed pipeleading into one of Said openif1gS in the extended end a flle1 feed pipeleading into an othef of said openingS vvfth the end. of the feed pipefo1Ined into an iI1verted frusto-pyfaInidical re pot vith the top of thepot above the leve1 of the Side wanS of the base; 33 SquaTe tuyorecaSting having the top ffat and the side waHS ex tending downwardl andoutwardl on an an le With-the inner Side of the SideS to t against thetop of the baSe to sea1 the air chaInber and foffn the top thereof andhaving Spaced apart bosseS on the under side of the flat top, SaidbosSes to feSt on the top of the Te pot to leave openings between thetuyofe oaSting and the fe pot for paSSoge of air ffon1 the air ohamberfof con1 bustion of the fue1; and a clean out pipe extended into theextended end of Said base thfough vhich aoou1nulated d11St Inay be blownby the aiI' preS Sure fTofn the aif feed pipe when the cover of theolean out pipe has been TeInoved.

EBDRoK H. BIDENSTNE.

